| （単位：千円） | 投資有価証券 | 前年比（％） |
|---|---|---|
| 2026/5 | 911,776 | +41.3% |
| 2025/5 | 645,138 | +17.6% |
| 2024/5 | 548,501 | +21.3% |
| 2023/5 | 452,121 | +796.5% |
| 2022/5 | 50,430 | -59.2% |
| 2021/5 | 123,575 | -24.6% |
| 2020/5 | 163,883 | -44.0% |
| 2019/5 | 292,529 | +8.7% |
| 2018/5 | 269,166 | -19.9% |
| 2017/5 | 335,837 | -18.8% |
| 2016/5 | 413,782 | +0.6% |
| 2015/5 | 411,160 | +24.3% |
| 2014/5 | 330,814 | - |